Door or window ventilator.



N0. `658,935. A P'atent'd 001:. 2, |900.

P-. 'ABRAHAM'SON.

DOOR 0R WINDOW" VENTILATR.

(Application filed Apr. 10, 1899.)

(No Model.)

'me Manaus Prrzns co. Pnovaumo., wlgsmncrran. n. t;A

UNITED STATES PATENT OFFICE.

PETER ABRAHAMSON, OFSAN FRANCISCO, CALIFORNIA.

VDOOR-0R WINDOW VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 658,935, dated October 2, 1900.

Application iiled April 10, 1899. Serial No. 712,494. (No model.)

To @ZZ whom, it may concern.:

Be it known that I, PETER ABRAHAMsoN, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented an Improvement in Door or Window Ventilatore; and I hereby declarethe following to be a full, clear, and exactdescription of the same.

My invention relates to the class of ventilators for window-sashes, transoms, doors, and other similar communications between apartments and the outer air; an`d it consists of a framework fitting the transom or other opening through which ventilation is desired, said framework having an exterior and an interior glazed or other closed wall, one of said walls extending from the bottom upwardly, having an open space at the top, and the other extending from the top downwardly, having an open space at the bottom, forming 4a tortuous passage, through which the hot air from the room may escape and the cold air 4from the exterior enter, with suitable screens covering the open top and bottom spaces and forming a continuation of the glazed sections, and in combination therewith of averticallyslidable guided glazed plate moving in the interspace between the outer and inner walls of the ventilator and means whereby it may be moved to open or close the passage through the ventilator.

My invention also comprises details of construction,which will be more fully explained by reference to the accompanying drawings, in which- Figure l is a vertical lateral section through the ven tilator. Fig. 2 is a similar section showing the fixed glass and screen outside the upper sash, the latter regulating the draft.- Fig. 3 is an exterior view of Fig. v1. Fig. 4 shows the ventilator attachedto anI arched window, the regulating-strip being attached to the outer portion of the case.

The object of my invention is to provide for perfect and easy ventilation of apartments through the usual avenues of communication with the exterior and without interfering with the devices, such as windows,transoms,doors, &c., which control said avenues and in a -the ventilation is to be obtained.

B is a rigid plate,y of glass or other suitable material, which is iixed in the usual or any suitable mannerin the outer face of the frame.

The frame has a depth from front to rear depending on the corresponding depth of the sash or space in which it is lixed, but always sufficienttovleave a space between this outer plate and an inner plate C, which is fixed to the inner side of the frame.

Inv Fig. 3 I have shown a frame A', to which the plate C is ixed, said frame being hinged at one side to the main frame A, so that it may be opened or closed about its hinges, and

upon the'opposite edge it is provided with a suitable latch and catch, as shown at D.

The plates B and C in the present case I have shown as being made of glass, s as to present no obstruction to the light. These plates extend, respectively, from the top to a point a short distance from the bottom and from the bottom to a point within a short distance of the top. The frame or sash A in Fig. 3 is intended to be closed to operate in conjunction with the main frame A, the two plates B and C in both Figs. l and 3 standing parallel with each other at a short distance apart, so as to leave a space between them, and one -has an open space below its lower edge and the other an open space above its upper edge, so that air may circulate from one side to the other of the device, the hot and foul air passing out from the apartment, while the cool air passes in to take its place, and by reason of the tortuous passage provided by the position of the plates and the openings at the top and bottom there will be noV direct draft, which is disagreeable. In order to prevent the passage of insects through these Ventilating-spaces at top and bottom, I have here shown them as covered-with screens E E', which permit the free passage of air, butwill prevent any passage of insects through them. In order to make these devices symmetrical, the space occupied bythe screens is approximately about one-third of the depth of the whole device, so that there will be an intermediate space of equal depth in which the plain glass appears.

In order to close the passage through the ventilator and prevent any air passing through it, I have shown an intermediate sliding plate F, which is preferably made of glass and so guided as to be slidable within either the fixed main frame A of Fig. l or the hinged frame A of Fig. 3. In order to give this sliding frame the utmost freedom of motion, I prefer to employ small rollers G, which are journaled at some point either upon the slidable frame, so that the peripheries of the rollers travel against the guides on the main fixed frame, or the rollers may have stationary journals upon the main frame, so that the edges of the slidable frame F, being of sufficient length, will travel against these rollers. In either case the effect is the samethat is, to prevent an undue amount of friction and to cause the slidable frame to move easily. In order to move this slidable frame, I have shown cords H, connecting with the lower edges of the frame, extending thence upward over pulleys I in the upper part of that portion of the frame against which the slidable frame is movable, and thence the cords extend down interior to the door, window, or other opening to a point within reach of the operator, so that by pulling upon these cords the slidable frame may be moved to cover and cut off the screen-opening in the upper part, thus preventing any passage of air therethrough. When in this position, the cords may be secured by catches upon the sides of the door, window, or other casing or at other convenient point, and in this condition the opening will be closed and no passage of air therethrough will take place. The opening or closing movement may be in either direction. When it is desired to again open the device by releasing the cords from their fastening, the slidable plate may be moved until the opening is again exposed. Then the plate is thus moved, it occupies a space coincident with the glazed central portion of the ventilator and is not distinguishable from the remainder of the device. The operatingcords are preferably passed through tubes or cases H. lVhen it is desired to apply this device to the upper part of a window so that the sash can entirely close without moving the ventilator, as shown in Fig. 2, I employ the frame A4, which is adapted to be fixed in the window frame or casing so that its inner face is approximately in the plane of the movement of the outer face of the sash, said frame having fixed to it the glass plate B4 and screensection E4. This allows the sash to be moved up and down to close or open the Window without in any way disturbing or interfering with the Ventilating device, which may remain in position at all times, and when the upper sash is drawn down to a point opposite the bottom of the frame A it forms a closure against the frame at that point to prevent the entrance of insects or dust while leaving the'screen portion of the Ventilating device entirely exposed for the passage of air.

In Fig. 4 I show my invention attached to an arched window, the frame A2 being arched to t the window-opening, and the plate B2, screen E2, and slidable frame F2 being arranged substantially as before described andsaid slidable frame being operated by cords H2,passing over pulleys I2, in any appropriate manner.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination with a window or like opening, of plates fixed in parallel planes with an interspace, one plate having a space between it and the top of the opening, and the other a like space between it and the bottom, and screen continuations of the plates to cover said spaces, a guided slidable plate movable in the interspace to open or close the passage therethrough, and means for moving said slidable plate.

2. In a sash, or door-transom ventilator, a frame fixed in the opening having parallel vertically-disposed plates fixed to the outer and inner parts of the frame, one having an opening between it and the top of the frame and the other between its lower edge and the bottom, each of said plates having a screen continuation with an interspace between the two plates, a guided slidable frame movable in a parallel plane and substantially in contact with one of said plates, cords connecting therewith and leading over direction-pulleys at the top and thence to a point within reach of the operator whereby said slidable frame may be moved to close the open passage or to expose it.

3. In a sash, or door-transom ventilator, a frame fitted to the Ventilating-opening having a plate fixed vertically in the outside of said frame having a space between one of its horizontal edges and the corresponding side of the frame, and a screen fixed in said space, a similar plate and screen fixed in a supplemental frame in the reverse position to the first-named plate and screen, said supplemental frame being hinged at one side to the main frame and having a latch or catch upon the opposite side whereby it may be opened and closed with relation to the main frame.

4:. In a sash, or door-transom ventilator, a frame fixed in the Ventilating-opening having an outer fixed plate and screen continuation, a supplemental frame fitting and hinged to the main frame with a latch by which it may be opened and closed with relation thereto,

IOO

sisting of exterior and interior plates so fixed with relation to each other as to form a tortuous passage, a slidable plate movable to open or close the passage, connecting-cords by which the plate is moved, with holding devices therefor, and tubes or channels through which the cords pass.

In Witness whereof I have hereunto set my hand.

.PETER ABRAHAMSON.

Witnesses:

HARRY J. LASK, S. H. NOURSE. 

